Secure PDF Changelog

This document provides high-level information about new features, fixes, and functionality changes between minor version releases of Secure PDF. For more details or if you have any questions, please contact support@nsoftware.com.

Legend:
[FIX] - An issue was fixed.
[NEW] - New feature or functionality added.
[IMPORTANT] - A change which requires attention.

Version: 24.0.9678
Date: July 1, 2026

  • [FIX] Improved TrueType font matching algorithm
  • [FIX] Fixed a regression where the FallbackFont configuration setting was being ignored
  • [FIX] Fixed a C++ issue where the FontPaths configuration setting ignored paths without a trailing slash

Version: 24.0.9658
Date: June 11, 2026

  • [FIX] Fixed an issue where Sign would hang when inserting a remote signature into certain documents

Version: 24.0.9651
Date: June 4, 2026

  • [NEW] Added pkcs7signRemote option to RemoteSignatureMethod configuration setting
  • [FIX] Fixed an access violation in PDFForm and PDFExplorer that occurred when closing the document in some cases

Version: 24.0.9614
Date: April 28, 2026

  • [NEW] Added support for preserving PDF/UA compliance when signing with visible signature widgets
  • [NEW] Added support for Trusted Lists v6
  • [NEW] Added pkcs7sign option to RemoteSignatureMethod configuration setting
  • [FIX] Improved font support across the board

Version: 24.0.9571
Date: March 16, 2026

  • [IMPORTANT] Changed default font from Arial to Times New Roman (affects PDFSign, PDFForm, and PDFEdit)
  • [FIX] Fixed a regression where font styles specified in SetFont were being ignored

Version: 24.0.9554
Date: February 27, 2026

  • [FIX] Fixed a .NET CultureInfo-related issue that was causing errors when opening documents in Adobe

Version: 24.0.9553
Date: February 26, 2026

  • [FIX] Fixed another .NET FormatException when opening certain documents

Version: 24.0.9546
Date: February 19, 2026

  • [FIX] Fixed slowdowns when assembling many new text blocks in PDFEdit

Version: 24.0.9536
Date: February 9, 2026

  • [NEW] Added CustomSignedAttributes configuration setting to PDFSign
  • [FIX] Fixed a .NET FormatException when opening certain documents

Version: 24.0.9505
Date: January 9, 2026

  • [FIX] Fixed an issue where certain certificates' subjects were displayed incorrectly in the signature widget

Version: 24.0.9480
Date: December 15, 2025

  • [NEW] Added BackgroundMask and InvertMask widget properties to SetWidgetProperty

Version: 24.0.9476
Date: December 11, 2025

  • [NEW] Extended support for Arabic symbol shaping in signature widgets
  • [NEW] Added UseArabicLigature widget property to SetWidgetProperty
  • [FIX] Fixed a C++ bug that prevented some signatures from being loaded

Version: 24.0.9469
Date: December 4, 2025

  • [NEW] Added SignatureAllowedChanges, SignatureLockedFields, and SignatureInvertedLock configuration settings to PDFVerify

Version: 24.0.9453
Date: November 18, 2025

  • [FIX] Fixed an error when querying the RevisionOffsets configuration setting for documents with only one revision

Version: 24.0.9446
Date: November 11, 2025

  • [NEW] Added RevisionOffsets configuration setting to PDFSign and PDFVerify
  • [FIX] Improved performance when opening large documents

Version: 24.0.9440
Date: November 5, 2025

  • [NEW] Added AutoReverseRTLText and AutoReshapeArabicSymbols widget properties to SetWidgetProperty
  • [FIX] Fixed an issue in PDFEdit where transparency parameters specified in SetFont were being ignored by AddTextBlock
  • [FIX] Removed OwnerPassword configuration setting from PDFExplorer
  • [FIX] Fixed an ASN.1 parsing bug that was causing a timestamping error with a specific TSA

Version: 24.0.9396
Date: September 22, 2025

  • [NEW] Added PDFExplorer component to all editions

Version: 24.0.9390
Date: September 16, 2025

  • [FIX] Fixed a C++ error that prevented CertMgr from listing certificates again after HSM insertion

Version: 24.0.9385
Date: September 11, 2025

  • [NEW] Added PKCS#11 support to PDFSign in the C++ edition

Version: 24.0.9376
Date: September 2, 2025

  • [FIX] Fixed an access violation when adding PDFMedia objects to the Media collection in PDFEdit

Version: 24.0.9350
Date: August 7, 2025

  • [FIX] Fixed an issue where Adobe would show signatures in encrypted documents as invalid after Update

Version: 24.0.9348
Date: August 5, 2025

  • [FIX] Fixed a .NET issue that prevented the FontName widget property from respecting the FontPaths configuration setting in PDFSign

Version: 24.0.9334
Date: July 22, 2025

  • [IMPORTANT] Removed ActiveX/ASP/COM edition
  • [NEW] Added PDFEdit component to all editions
  • [NEW] Added PDF/A support to PDFSign, PDFVerify, PDFForm, and PDFEdit via EnforcePDFA, PDFALevel, and PDFAPolicy configuration settings
  • [NEW] Added AFRelationship configuration setting to PDFSign
  • [NEW] Added LoadMedia configuration setting to PDFForm
  • [NEW] Added FallbackFont configuration setting to PDFSign and PDFForm
  • [NEW] Added DefaultPageWidth and DefaultPageHeight configuration settings to PDFForm
  • [FIX] Fixed font issues when adding new fields in PDFForm

Version: 24.0.9250
Date: April 29, 2025

  • [IMPORTANT] Renamed RemoteSignature configuration setting to RemoteSignatureMethod in PDFSign
  • [NEW] Added PKCS#7 remote signing support to PDFSign
  • [NEW] Added support for verifying EdDSA signatures
  • [FIX] Improved form field identification for non-standard documents in PDFForm

Version: 24.0.9231
Date: April 10, 2025

  • [NEW] Added JavaScript edition
  • [NEW] Added PDFForm component to remaining editions
  • [NEW] Added remote signing support to PDFSign via RemoteSignature, RemoteSignatureDigest, and RemoteSignatureData configuration settings
  • [NEW] Added CreateNew method to PDFForm
  • [NEW] Added CompressStreams configuration setting to PDFForm
  • [FIX] Fixed an issue where decryption would succeed when supplying a wrong user password
  • [FIX] Fixed a timestamping error for TSAs that require a nonce in the request

Version: 24.0.9188
Date: February 26, 2025

  • [IMPORTANT] PDFSign and PDFVerify now use zero-based page indices (affects SignatureWidgetPages, GetPageProperty, and WidgetPages)
  • [NEW] Added AddBitmap, AddDrawing, Flatten, GetFieldProperty, and SetFieldProperty methods to PDFForm

Version: 24.0.9152
Date: January 21, 2025

  • [NEW] Added PDFForm component to .NET and Java editions

Version: 24.0.9133
Date: January 2, 2025

  • [NEW] Added C++, macOS, Delphi, C++ Builder, PHP, Python, and ActiveX/ASP/COM editions
  • [NEW] Added PKCS#11 support to PDFSign in the .NET edition
  • [FIX] Improved tolerance for documents with garbage bytes before the %PDF header
  • [FIX] Other minor compatibility improvements
  • [FIX] Fixed an issue where signature timestamps were missing when creating legacy Adobe signatures

Version: 24.0.9047
Date: October 8, 2024

  • [IMPORTANT] Renamed AddDocumentTimestamp method to AddTimestamp in PDFSign
  • [FIX] Improved tolerance for documents with malformed end-of-file (EOF) markers

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